Photograph shows a multitude of workers involved in excavation activities behind the timber crib and the west cofferdam. Excavation activities continued behind a protective steel piling structure that boxed in the men and made mechanized concrete...

Workers pressure washing a slab of concrete in preparation for another five foot slab of concrete. Notice the cooling pipes spaced 5 feet 9 inches apart, these pipes when flushed with water served to strengthen the concrete by maintaining a...